With two diodes in parallel back to back, the circuit will provide protection regardless of the signal polarity.
由于两个二极管反向并联，所以此电路能够对任何极性的信号进行保护。
An arrangement of components in a circuit that splits the current into two or more paths. Used chiefly in the phrase in parallel.
并联一种把电流分成两条或多条通路的联接电路元件的方法。
Its control circuit with double electromagnetic system can ensure synchronous closing, silent and energy saving operation of two contactors in parallel.
双电磁系统控制电路确保两台并联接触器的同步闭合和无声节电运行。
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